Master Brain

From TARDIS Index File, the free Doctor Who reference.

Master Brain was a futuristic computer in the Land of Fiction who had enslaved the Master of the Land of Fiction and tried to do the same to the Doctor. (DW: The Mind Robber)

The origins and ultimate purpose of the Master Brain remains unknown.

Aliens and Enemies of Season 6

The Dominators: Dominators  • Rago  • Toba  • Quarks  • Dulcians The Mind Robber: Master Brain  • Master of the Land  • White Robots  • Clockwork Soldiers  • Lemuel Gulliver  • Karkus  • Medusa  • Rapunzel  • D'Artagnan  • Lancelot  • Cyrano de Bergerac  • Blackbeard  • Minotaur  • Unicorn The Invasion: Cybermen  • Tobias Vaughn  • Packer  • Cyber-Director The Krotons: Krotons  • Eelek  • Gonds The Seeds of Death: Slaar  • Ice Warriors  • Martian Seed Pods  • Grand Marshall The Space Pirates: Maurice Caven  • Dervish The War Games: War Lords  • The War Chief  • The War Lord  • Smythe  • Security Chief  • von Weich  • Time Lords  • Goth